When to Plant in Peoria, IL

In Peoria, Illinois, gardeners rely on the median last spring frost date of April 23 and the first fall frost approximately on October 12, granting the area about 172 frost-free days each year. These dates form the backbone of a planting calendar that allows for a productive growing season, facilitating a diverse range of crops that flourish in this local environment.

The microclimate in Peoria is classified as humid continental (4 distinct seasons), which means that the region experiences four distinct climatic phases. This climate is favorable for growing crops such as tomatoes, peppers, and beans, which thrive under the warm summers and provide robust harvests. However, cool-season crops like spinach and lettuce may struggle toward the heat of summer, as prolonged warmth can cause them to bolt or become bitter.

What to plant now in Peoria

Spring: Start planting warm-season crops like tomatoes and peppers after the last frost around April 23. Aim to transplant seedlings in late April to take advantage of longer growing days.
Summer: This season is optimal for planting fast-growing crops like summer squash and beans. Plant these crops from late May until early July to ensure they mature before the first fall frost.
Fall: Plant autumn-harvest crops such as kale and Brussels sprouts starting in early September, allowing sufficient time for them to mature before the first frost on October 12.
Winter: Although many crops won't thrive during winter, it’s a good time to plan your spring garden by ordering seeds and preparing your beds for planting to maximize the productive season ahead.

In Peoria (172 frost-free days, a moderate season), 30 of 56 planner crops fit outright, 25 get two plantings, 1 crop is perennial.

Month by month in Peoria

Month	What to do
January	January is a time for indoor garden planning. Start selecting seeds, reviewing plant layouts, and considering what vegetables or flowers you'll want for spring. Think about crop rotation and companion planting.
February	February allows for indoor seed starting for cool-season crops. Begin with varieties such as tomatoes and peppers, as starting early gives them a head start for planting after the frost around April 23.
March	In March, plan for outdoor planting and prepare your garden beds. Start sowing seeds for cool-season crops like peas and spinach, which can handle the chill until they mature.
April	April heralds the warming weather and blooming gardens. As the median last frost date of April 23 approaches, it's time to get seedlings ready for transplanting and to sow more seeds directly into the soil.
May	May is an exciting month as the risk of frost decreases significantly. Transplant warm-season crops like tomatoes and peppers outdoors and continue sowing crops like beans and corn for a robust summer harvest.
June	By June, your warm-season crops should be thriving. Focus on maintaining them with regular watering and weeding while harvesting early fruits and spring crops, and consider succession planting for staggered harvests.
July	In July, gardens are typically in full swing. Keep up with watering and start planning for fall crops. Plant quick-maturing varieties like radishes, and consider succession planting for more beans and zucchinis.
August	August is the time to harvest most summer crops. Begin preparing for fall planting, sowing slower-maturing varieties like cauliflower and broccoli to ensure they finish growing before the first frost.
September	September marks the transition to fall gardening. Start planting kale and Brussels sprouts early in the month to allow them to mature before the first frost on October 12.
October	In October, the gardening season begins to wind down as temperatures drop. Harvest remaining crops and prepare for winter by cleaning up the garden and focusing on mulching to protect the soil for next spring.
November	November may bring the first frosts, signaling the end of the growing season. Use this time to reflect on the past garden year, plan for the next one, and start ordering seeds for spring.
December	December is for planning and dreaming about the next gardening season. Review your successes and challenges from last year and research new crops or techniques to try when planting begins again.

Frost dates for Peoria ZIP codes

ZIP	Last spring frost (50%)	First fall frost (50%)	Zone
61604	April 23	October 12	6a

FAQ

When is the last frost in Peoria?

The last frost in Peoria typically occurs around April 23, marking the end of the cold weather and the start of the planting season.

What vegetables grow best in Peoria?

Crops like tomatoes, peppers, and beans thrive in Peoria's humid continental climate, with its warm summer providing the perfect growing conditions.

When should I plant tomatoes in Peoria?

Tomatoes should be planted outdoors after April 23, ideally from late April to early May for optimal growth.

Can I garden year-round in Peoria?

Gardening year-round in Peoria can be challenging due to the humid continental climate. Summer is prime time for outdoor gardening, while winter months necessitate planning and indoor gardening.

How does Plan My Garden help Peoria gardeners?

Plan My Garden provides tailored advice, planting calendars, and resources specific to Peoria's climate and local growing conditions, making garden planning easier and more productive.